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  1. Lou C

    Mercruiser 4.3 knocking noise

    It does sound like metal to metal contact, with a flapper it will make a lower pitched sound due to the rubber coating. It would be interesting to see if it makes the same noise with the engine out of the boat.
  2. Lou C

    5.7 omc carb leak

    Well a stretched cable would cause the drive to jump out of gear with a CLUNK, not slippage. If when you lose drive the engine temp started to go up; that’s a sign it’s the coupler because the impeller in the drive turns at the speed of the input shaft. If it’s not spinning at engine crankshaft...
  3. Lou C

    Mercruiser 4.3 knocking noise

    It might be coming from an exhaust flapper I had this when I replaced the old OMC one piece V6 manifolds with the later 2 piece system, the water flow in them is different and the flappers make different noises than with the original exhaust. Darn near drove me crazy till I figured it out...
  4. Lou C

    3.8 water gushing from engine

    Those angled drain fittings have a way of clogging up, I have that on my 4.3 and have had to dig it out a few times to get it to drain. They used that because of the size of the big old direct drive Delco starter, if you replace with a PMGR starter when you get a reman block, you can eliminate...
  5. Lou C

    Any lasting proven method of painting a prop ??

    In Charlie's boating environment (similar to mine) painting with antifouling is pretty much a necessity because you will get growth on the props even if you use the boat often, depending on location. It varies a lot but fouling can be pretty bad here.
  6. Lou C

    Any lasting proven method of painting a prop ??

    I've always had the need for anti fouling paint due to the water conditions here so 2 coats of brushed on Trilux lasts the whole season. Your waters are probably similar to mine Charlie.
  7. Lou C

    Alpha 1 gen 2 5.7L overheating

    Some of the muffs being sold, are made of rubber too stiff to conform to the lower unit, to get enough water in. I had this with the dual feed rectangular Tempo style muffs. The best ones I have used are the Merc/Quicksilver ones with the metal clamp. They are softer rubber and confirm to the...
  8. Lou C

    5.7 omc carb leak

    And that's not the only cause of a bog, it could be a bad accel pump piston & seal. I replaced mine last spring and it made a big difference. The old one was just worn out and/or deteriorated from the e10 gas we are stuck with using. I used a good one from Cliff's.
  9. Lou C

    5.7 omc carb leak

    that's the thermostatic choke spring for the divorced choke. the spring you are looking for is inside the air horn (top cover of carb)
  10. Lou C

    5.7 omc carb leak

    look in the pic above, air valve torsion spring. Keep in mind that pic shows it with it upside down from how its installed. So when installed it is on the starboard rear side of carb air horn. Need a small mirror to see it.
  11. Lou C

    5.7 omc carb leak

    On the 4bbl Quadrajet the secondaries are mechanically operated but the air flaps above them (secondary air valves) are vacuum operated. There is a spring that keeps them shut till the vacuum drops to a certain level but the tightness of the spring is adjustable. If they open too soon you can...
  12. Lou C

    1992 Marine Power 454 Choke Thermostat Replacement

    Try Cliffs above or Quadrajetparts.com Those springs are out there…
  13. Lou C

    5.7 omc carb leak

    Great great great! Spares: Fuel filter Belts Points & condenser if you still have the old style ignition Cap & rotor Impeller wear plate & gasket Gasket sealer Tools to change all of the above I also have a spare bilge pump
  14. Lou C

    Re-upholstery Job on Cruisers Yacht 338 Bowrider

    Just beautiful Ted! What an exquisite boat!
  15. Lou C

    2 Fuel Water filters ,2 totally different fuel contents,Fuel pros ,have a look at this

    Yeah the weather has been bad but this coming week it should be better. I'm going to put the outdrive back on tune it up and I just have to fix some rot in the coaming panel and replace the old OMC remote control, then it's going in.
  16. Lou C

    After market fuel pumps

    We had Quadrajets on our cars in the old days it’s like a old friend
  17. Lou C

    After market fuel pumps

    OUCH! that's why I'm glad I have this: and this: just like way back in 1966! fuel pump is about $75 rebuild kit is $50
  18. Lou C

    2 Fuel Water filters ,2 totally different fuel contents,Fuel pros ,have a look at this

    I dump mine out every season. If I were to see something I don't like I'd probably try to siphon out whatever was in the very bottom of the tank, just to prevent a problem during our short season. If water is a frequent problem the Racor UL listed filters with the metal bowl are superior.
  19. Lou C

    5.7 omc carb leak

    Yep quite impressive water fall. I'd give the threads a light coat of Evinrude gasket sealer or Permatex Aviation, both help prevent corrosion and also may keep them from getting loose.
  20. Lou C

    5.7 omc carb leak

    well I'll be damned, the bolt is out just like you said. I'd start taking off the exhaust manifolds/hoses so you can get in there and tighten them, might need a chiropractor after ward though. I was able to change the steering actuator with the engine in place maybe you can do this...
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